VINTAGE WATCH | Seiko 6138 SpeedTimer (Yachtman) (UFO)

The Seiko 6138 SpeedTimer & UFO: Horological History Meets Timeless Design  

Seiko 6138 SpeedTimer: The Evolution of Innovation  

While debate surrounds the "first" automatic chronograph, Seiko’s 6139 movement (released May 1969) predates its Swiss rivals, cementing its place as a true pioneer. But the Seiko 6138 movement took innovation further. Born from market demand, it introduced a 24-hour chronograph counter, allowing precise timing beyond 1 hour—a feature unmatched by its contemporaries. Paired with a day-date complication (quick-set via the crown) and a column wheel mechanism for silky-smooth chronograph operation, the 6138 became a benchmark for durability and functionality.  

Proven in Space, Built for Earth  

Seiko’s 6138 lineage isn’t just historically significant—it’s *tested*. Astronaut William Pogue famously wore its sibling, the 6139, during NASA’s 1973 Skylab mission, proving these movements thrive under extreme conditions. Rugged, reliable, and ready for adventure, the 6138 embodies Seiko’s reputation for tool-watch toughness.  

Discover the Seiko UFO (Ref. 6138-0019): A Design Icon  

Nicknamed the “Seiko UFO” for its flying-saucer-inspired case, the 6138-0019 Yachtman is a masterpiece of 1970s design. Its distinctive no-lug silhouette seamlessly integrates the crown and pushers, while the 44mm case (large for its era) commands attention.  

Striking Visual Details  
- Jet-Black Dial & Silver Subdials: Contrasting textures with orange chronograph accents ensure legibility and a sporty edge.  
- Vintage Charm: Aged lume (warm patina) and a red-accented tachymeter bezel add retro character.  
- Original Crystal: Domed glass with light marks, preserving its authentic appeal.  

Unpolished, Uncompromised  
This UFO retains its factory-fresh finishes (brushed and mirror-polished surfaces), a rare find for collectors. Powered by a recently serviced 6138 movement, it’s ready to wear and impress.  

Why This Watch Matters  
The Seiko 6138 UFO isn’t just a vintage chronograph—it’s a slice of history. From its role in the automatic chronograph race to its bold, era-defining design, this watch is a collector’s dream and a conversation starter.  

Final Touch: Style It Your Way  
Enhance the UFO’s sporty DNA with a vibrant NATO strap—a perfect match for its bold aesthetic. Choose your favorite from our collection and make this iconic piece uniquely yours.  

Own a Legend: The Seiko 6138 UFO bridges engineering brilliance and retro flair. A rare opportunity to own a piece of horological history.  

Specification:

Maker: Seiko

Model: 6138-0010 Seiko UFO Yachtman Chronograph 

Era: 1970 Oct

Case Diameter: 44 mm

Lug width: 20 mm

Case Condition: Unpolished case in mint condition with factory brush and mirror finishing still available.  

Dial Condition: Amazing patinaed lume on the black dial with silver sub-dial. All original hands with minor aging on the minute hand lume.

Crystal: Original domed glass crystal with very minor usage mark on.

Movement: 6138 automatic chronograph movement running well with all complication function well and keeping good time.